3-((3,4-Dichlorophenyl)diazenyl)-1-(morpholinomethyl)-1H-indol-2-ol CAS 338391-74-5
| CAS No. | 338391-74-5 |
| Molecular Formula | C19H18Cl2N4O2 |
| Molecular Weight | 405.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-((3,4-Dichlorophenyl)diazenyl)-1-(morpholinomethyl)-1H-indol-2-ol (CAS 338391-74-5), molecular formula C19H18Cl2N4O2 and molecular weight 405.28 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C19H18Cl2N4O2, 3-((3,4-Dichlorophenyl)diazenyl)-1-(morpholinomethyl)-1H-indol-2-ol contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 405.28 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C19H18Cl2N4O2 |
| Molecular Weight | 405.28 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Dichlorophenyl Standards
- 1-(4-(2,4-Dichlorophenyl)thiazol-2-yl)-4-(4-fluorophenyl)-1H-pyrazol-5-amine (CAS 956795-96-3)
- 4-(2,4-Dichlorophenyl)-2-phenyl-5-[(Z)-2-phenyldiazen-1-yl]pyrimidine (CAS 339279-76-4)
- N-(3,4-Dichlorophenyl)-4-hydroxy-1-methyl-1H-thieno[3,2-c][1,2]thiazine-3-carboxamide 2,2-dioxide (CAS 303987-82-8)
- [(3Z)-1-[(2,4-Dichlorophenyl)methyl]-2-oxo-2,3-dihydro-1H-indol-3-ylidene]amino 2,2-dimethylpropanoate (CAS 303997-04-8)
- [(3Z)-1-[(2,4-Dichlorophenyl)methyl]-2-oxo-2,3-dihydro-1H-indol-3-ylidene]amino pentanoate (CAS 303996-98-7)
- [(3Z)-1-[(2,6-Dichlorophenyl)methyl]-2-oxo-2,3-dihydro-1H-indol-3-ylidene]amino 3-methylbutanoate (CAS 252579-07-0)
- [(3Z)-1-[(2,6-Dichlorophenyl)methyl]-2-oxo-2,3-dihydro-1H-indol-3-ylidene]amino pentanoate (CAS 252579-06-9)
- (3E)-3-{[(2,6-dichlorophenyl)methoxy]imino}-1-(2-phenyl-1,3-thiazol-5-yl)propan-1-one (CAS 338414-41-8)
Recommended Standards
- 1-tert-Butyl 3-methyl 4-((2,4-dichloropyrimidin-5-yl)methyl)piperazine-1,3-dicarboxylate (CAS 2700529-05-9)
- 3-Bromo-2-(4-methoxyphenyl)-4,5-diphenylfuran (CAS 6628-71-3)
- 1-tert-Butyl 2-methyl 4-((2,4-dichloropyrimidin-5-yl)methyl)piperazine-1,2-dicarboxylate (CAS 2700539-03-1)
- 1-(2,4-Dichloro-5-methoxyphenyl)-N-(2,4-dimethylphenyl)-5-methyl-1H-1,2,4-triazole-3-carboxamide (CAS 339099-54-6)
- 4-Iodo-2-(trifluoromethyl)benzyl bromide (CAS 1253188-93-0)
- 5-(Benzyloxy)-4-Methoxy-2-Methylbenzaldehyde (CAS 97400-62-9)
- Mal-PEG2-NH2 (TFA) (CAS 660843-23-2)
- 4-Methyl-5-oxyethyl Thiazol Diphosphate Ammonium Salt (CAS 2606-90-8)
- tert-butyl 3-(aminomethyl)-3-{[(tert-butoxy)carbonyl]amino}azetidine-1-carboxylate (CAS 1936305-61-1)
- 4-(2,4-Difluorobenzoyl)-8-methyl-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid (CAS 1326814-92-9)
- 1-(3-Ethoxyphenyl)-4,4,4-trifluorobutane-1,3-dione (CAS 1119452-86-6)
- 1-Phenyl-N-(2-(trifluoromethyl)benzyl)cyclopentane-1-carboxamide (CAS 1022584-65-1)
- Methyl 2,5-dichloro-4-nitrobenzoate (CAS 63105-61-3)
- Semaglutide impurity 40 (CAS CATO-C4X-222640)
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